Whocares

5 clues
So ___?
Big deal
So what?
Dismissive remark
Unenthusiastic response
Similar answers:
Airfares
Amares
Andthosewhocant
Annameares
Antares
Anybodywhocomes
Apportionshares
Ares
Aresad
Aresco
Aresent
Areservicemen
Aresmiling
Areso
Aresold
Aressveepee
Arest
Arestingofficer
Arestrange
Aresuperficial